EMERSON KJ2222X1-BA1

Technical & Electrical Specifications

• Module Operating Supply Voltage: 24 V DC ±10%
• Total Module Power Consumption: 5 W
• Independent Input Channels: 8 isolated per card
• Nominal Input Signal Range: 4 mA ~ 20 mA DC
• Full Scale Measurement Accuracy: ±0.1% of reading
• Maximum Input Response Delay: < 100 ms
• Input Circuit Impedance: 100 kΩ per channel
• HART Communication Compatibility: HART 5 / HART 7 bidirectional transparent communication
• Field Circuit Energy Limited Rating: Uo=28.7 V, Io=33 mA, Po=607 mW
• Intrinsic Safety Classification: Ex nA nL IIC T4 Gc

Mechanical & Material Specifications

• Overall Module Dimension (W × H × D): 139 mm × 102 mm × 60 mm
• Housing Material: Black industrial ABS flame-retardant plastic
• Mounting Standard: DeltaV S-Series dedicated rack backplane slot mounting
• Net Unit Weight: 0.5 kg

Environmental Parameters

• Operating Ambient Temperature: -40 °C ~ +75 °C
• Storage Temperature Range: -55 °C ~ +85 °C
• Tolerable Humidity: 5% ~ 95% RH non-condensing

Function Features

1. Eight fully independent galvanically isolated analog input channels
2. Native bidirectional HART protocol pass-through for SMART transmitter remote calibration
3. Continuous channel open/short circuit field wiring diagnostic monitoring
4. Hot-swap capable for online module replacement without full system shutdown
5. Automatic channel signal range self-calibration on power-up
6. DCS backplane high-speed digital bus communication with DeltaV controller CPU
7. Ex certified energy-limited field circuit design for Division 2 hazardous zone deployment

Working Principle

Advantage Highlights

1. 8-channel high-density design minimizes rack slot consumption versus 4-channel equivalent modules
2. Hot-swap functionality eliminates full DCS rack shutdown during module maintenance replacement
3. Ultra-wide -40 °C to +75 °C operating temperature range supports outdoor unheated control cabinets
4. Native HART 7 compatibility supports latest generation SMART process transmitters
5. ±0.1% high measurement precision critical for precision chemical and refining process control
6. Ex nA IIC T4 certification permits installation within Class I Division 2 hazardous classified cabinets

Applicable Industries

Installation Requirements

1. Install exclusively within Emerson DeltaV S-Series compatible rack backplane dedicated I/O slots
2. Match terminal block base unit model KJ2222X1-BA1 corresponding terminal assembly
3. All field wiring routed through rack cable duct separated from high-voltage power wiring
4. Rack power supply must deliver regulated 24 V DC ±10% SELV industrial power
5. Maintain minimum 20 mm vertical airflow clearance above and below fully populated rack chassis

Usage Precautions

1. Do not connect field circuits exceeding 33 mA maximum field current limit per channel
2. Disconnect all field-side wiring before performing module hot-swap replacement
3. Avoid installation adjacent to unshielded variable frequency drive power supply racks
4. Conduct annual HART communication channel functional diagnostic verification
5. Do not modify internal module hardware circuit; only factory-certified replacement units permitted
6. For Division 2 hazardous cabinet deployment, strictly follow Emerson Ex rack wiring installation manual